... non-contactor electronic switch in the logic control circuit , similar with electric-magnetic relay, it can switch on or off a ... (2.5KV), speed switch-over, and can match for digital-circuit. With sealing with fireproof epoxy, so it is of withstanding voltage, moistureproof ... SSR It is input signal can be compatible with both of computer terminal and digital logic circuit. Design space 160% face-mount ...